Fabrication of Sequential Naso-Alveolar Molding Appliances in the Treatment of Cleft Lip/Nose Deformities

Virtual Surgical Planning for the Fabrication of Sequential Naso-Alveolar Molding Appliances in the Treatment of Cleft Lip/Nose Deformities

There is a robust body of research suggesting that the use of pre-surgical orthopedic devices prior to definitive cleft lip/nose repair results in significant improvement of facial aesthetics with long term follow up. However, in recent surveys of the cleft centers in the US, only 30% of cleft centers offer PSIOs, and only 13% routinely report its use. Accordingly, thirty percent of centers utilize a two-stage cleft lip/nose repair in the centers' algorithm (1st: lip adhesion; 2nd: final lip repair). The major drawback to a two-stage cleft procedure is the administration of two general anesthetics to an infant before the age of one year. There is a growing amount of evidence that multiple anesthetic experiences before a certain age could affect brain development.

It is difficult to make inferences as to why clinicians are not utilizing surgical aids to decrease the size of the cleft width, but even when PSIO is offered, caregivers experience additional, potentially prohibitive challenges. In one study, caregivers traveled an average of 70 miles to visit the nearest cleft center offering pre-surgical orthopedic devices. As these devices are created by hand every 1-2 weeks after seeing the child in clinic, parents are required to travel to clinic multiple times per month. Not surprisingly, infants who were first-born and those who did not have other siblings were more likely to receive pre-surgical orthopedic treatment than infants who were residing with other siblings.

Given the benefits of PSIOs and the barriers both to healthcare systems and patients' families associated with PSIOs in its current form, a new form of pre-surgical clinical management is needed.

Objectives:

1. Evaluate JHH's current clinical performance in addressing unilateral cleft lip and nasal deformity.
2. Elucidate the difference in preoperative cleft size and in surgical management/outcomes for patients who received PSIOs through 3D-printed devices.
3. Using the above maxillofacial growth data with and without PSIOs, the investigators aim to create an algorithm to predict maxillofacial growth for each individual patient to design pre-sequenced custom PSIO devices.

Study Overview

• Status: Withdrawn
• Conditions: Cleft Lip; Nose Deformities, Acquired; Deformity; Congenital Nose Malformation
• Intervention / Treatment: Procedure: Cleft Lip/Nose Repair without PSIO; Procedure: Presurgical Infant Orthopedic Therapy

Detailed Description

Approximately 7000 babies are born with a cleft lip and/or cleft palate in the United States per year. Globally, this defect is staggeringly common, with 100,000 new cases per year. This defect is due to a failure of normal fusion between facial structures, causing a full thickness gap of the upper lip involving skin, muscle, and other connective tissue. Due to aberrant insertion of the muscle underlying the lip as well as abnormal formation of deeper facial structures, the nose is also displaced inferiorly, laterally, and posteriorly. The wider the cleft, the more challenging the repair.

Current best practice in treating unilateral cleft lip and nose deformity involves presurgical infant orthopedics (PSIOs). PSIOs involves presurgically treating the deformity using custom orthodontics to gradually bring the two halves of the cleft together, reducing defect size and enabling complete repair with one surgery during early infancy. However, creation of these molds is time consuming and requires the expertise of a cleft orthodontist and weekly visits to the hospital for device advancement. As not all cleft centers have a specialized cleft orthodontist-including Johns Hopkins Hospital-many are unable to provide presurgical infant orthopedics. Weekly travel to cleft centers can also pose a significant temporal and financial burden to families, as the average patient is located over 60 miles from the nearest cleft center. In a recent survey of cleft centers in the United States, only 30% of these centers are able to provide presurgical orthopedic molding devices in treatment protocols. These centers therefore correct wide clefts with a staged, two-surgery approach. This approach is often less successful in both adequately aligning the gum and in repairing nasal defects, and usually requires intensive orthodontics and additional surgeries in adolescence. As the defect is not fully corrected in infancy, children are additionally subjected to the emotional and psychological difficulty and damage to self-esteem associated with the persistent defect.

With the advent of 3D printing technology, the investigators are now in the planning stages of implementing a new clinical protocol to bring PSIOs to Johns Hopkins Hospital (JHH). A cleft orthodontist at an equipped center will remotely design these orthodontic molds, which will then be 3D printed using dental acrylic (the same material currently used in hand-fabricated orthodontic models) and given to patients in the investigators' clinic. As planning these devices for 3D printing can be done remotely in a fraction of the time it would take to create each one by hand, this change in clinical practice will eliminate the need for an in-person specialized craniofacial orthodontist on faculty where one does not exist.

This research study seeks to elucidate both the investigators' current standard of cleft practice and the benefits the investigators hope to see after implementing this change in clinical practice. The investigators expect that although the investigators will initially create each new mold after a weekly hospital visit with in-person measurements, the investigators ultimately aim to develop an algorithm to predict early growth and development of the newborn's facial skeleton and soft tissue. This will allow the fabrication of sequential pre-surgical orthopedic molding devices based of the infant's predicted facial growth, which can be delivered en bloc to the infants home, thereby eliminating the need for frequent visits to geographically inconvenient centers. After 4-5 months of using these devices, the bony cleft gap will be closed, the nose straightened, and the child be ready for the definitive cleft lip and nose repair in a single surgery. These devices will not only physically close the gap of the cleft lip deformity, but will also close the gap in access to the necessary specialists for the ideal management of cleft deformities across the country. With this technology, any cleft center can offer naso-alveolar molding to every child born with cleft lip and palate in the country.

• Study Type: Observational

Contacts and Locations

Study Locations

• United States
  • Maryland
    • Baltimore, Maryland, United States, 21287
      • Johns Hopkins Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 1 year to 1 year (Child)
• Accepts Healthy Volunteers: No

• Sampling Method: Non-Probability Sample

Study Population

Newborns either born in Johns Hopkins or presenting to clinic with a cleft lip between 0-1 months of life.

Description

Inclusion Criteria:

• All newborns either born in Johns Hopkins or presenting to clinic with a cleft lip between 0-1 months of life

Exclusion Criteria:

• Patients older than one month of age at presentation

Study Plan

How is the study designed?

Design Details

• Observational Models: Cohort
• Time Perspectives: Prospective

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
Cleft Lip/Nose Repair without PSIO; Participants who will undergo cleft lip/nose repair prior to addition of PSIO as part of standard of care in Hopkins.	Procedure: Cleft Lip/Nose Repair without PSIO; Standard of care surgical repair of cleft lip/nose without PSIO.
Presurgical Infant Orthopedic Therapy; Participants who will undergo cleft lip/nose repair after addition of PSIO as part of standard of care in Hopkins.	Procedure: Presurgical Infant Orthopedic Therapy; Standard of care surgical repair of cleft lip/nose with PSIO.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Percentage of cleft patients with an alveolar cleft of <5 mm at time of the first surgery	Percentage of cleft patients with an alveolar cleft of <5 mm at time of the first surgery will be assessed to determine the effect of 3D printed orthognathic pre-surgical molding devices on cleft care.	At the time of first surgery (3 months)
Cleft size at initial clinic presentation	Cleft size in millimeters (mm) at initial clinic presentation.	At the time of initial clinic visit up to 1 hour
Size of cleft at pre- and post-operative clinic visit	Size of cleft in millimeters at pre- and post-operative clinic visit	At pre- and post-operative clinic visit, up to 4 months

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Rate of change in cleft size	The rate of change in cleft size (mm/week).	Weekly, up 8 weeks
Length of time to achieve a cleft <5 mm	Length of time in days to achieve a cleft <5 mm.	Up to 4 months
Aesthetic outcome following cleft surgical repair as assessed by the surgeon	Aesthetic outcome following cleft surgical repair wiil be assessed by the surgeon using a clinical judgment.	Post surgery, up to 4 months
Satisfaction with the 3-D printed pre-surgical orthopedic device as assessed by parents	Satisfaction with the 3-D printed pre-surgical orthopedic device will be assessed by a satisfaction questionnaire administered to parents.	Post surgery, up to 4 months

Collaborators and Investigators

• Sponsor: Johns Hopkins University
• Investigators: Principal Investigator: Richard Redett, Johns Hopkins University

Study record dates

Study Major Dates

• Study Start (Actual): June 8, 2020
• Primary Completion (Estimated): April 1, 2022
• Study Completion (Estimated): April 1, 2022

Study Registration Dates

• First Submitted: April 2, 2020
• First Submitted That Met QC Criteria: April 2, 2020
• First Posted (Actual): April 6, 2020

Study Record Updates

• Last Update Posted (Actual): August 21, 2023
• Last Update Submitted That Met QC Criteria: August 17, 2023
• Last Verified: August 1, 2023

More Information

Terms related to this study

• Keywords: Cleft Lip
• Additional Relevant MeSH Terms: Respiratory Tract Diseases; Stomatognathic Diseases; Otorhinolaryngologic Diseases; Mouth Diseases; Nose Diseases; Lip Diseases; Mouth Abnormalities; Stomatognathic System Abnormalities; Congenital Abnormalities; Cleft Lip; Nose Deformities, Acquired
• Other Study ID Numbers: IRB00176186

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No